Replace mixins with inotify based observers

lib/tfw/mixins/monitor_manager_mixin.py

@@ -1,30 +0,0 @@
-# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
-# All Rights Reserved. See LICENSE file for details.
-
-import logging
-
-LOG = logging.getLogger(__name__)
-
-
-class MonitorManagerMixin:
-    def __init__(self, monitor_type, *monitor_args):
-        self._monitor_type = monitor_type
-        self._monitor = None
-        self.monitor_args = monitor_args
-        self.reload_monitor()
-
-    @property
-    def monitor(self):
-        return self._monitor
-
-    def set_monitor_args(self, *monitor_args):
-        self.monitor_args = monitor_args
-
-    def reload_monitor(self):
-        if self._monitor:
-            try:
-                self._monitor.stop()
-            except KeyError:
-                LOG.debug('Working directory was removed – ignoring...')
-        self._monitor = self._monitor_type(*self.monitor_args)
-        self._monitor.watch()   # This runs on a separate thread

lib/tfw/mixins/observer_mixin.py

@@ -1,20 +0,0 @@
-# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
-# All Rights Reserved. See LICENSE file for details.
-
-from watchdog.observers import Observer
-
-from tfw.decorators.lazy_property import lazy_property
-
-
-class ObserverMixin:
-    @lazy_property
-    def observer(self):
-        # pylint: disable=no-self-use
-        return Observer()
-
-    def watch(self):
-        self.observer.start()
-
-    def stop(self):
-        self.observer.stop()
-        self.observer.join()